期刊文献+

α-Fe_2O_3纳米立方体和纳米棒组装空心微球的可控合成及其磁学性能 被引量:6

原文传递
导出
摘要 在0.15mol/L Clˉ和0.05mol/L SO4^2-的存在下,通过Fe^3+溶液140℃水热反应12h分别得到α—Fe2O3纳米立方体和α-FeOOH纳米棒自组装的微球,将得到的α-FeOOH纳米棒自组装微球经600℃热处理2h后转化为α—Fe2O3纳米棒组装空心微球.利用X射线衍射仪、扫描电子显微镜、透射电子显微镜和红外光谱对所得产物进行表征和分析.结果表明,所制备的单分散的α-Fe2O3纳米立方体为六方单晶结构,其边长为500nm.直径为2~4.5μm的空心微球是由直径约150nm的α-Fe2O3纳米棒组装而成.研究了Clˉ和SO4^2-在纳米立方体和空心微球形成过程中的作用,提出了可能的生长机理.在室温下测试了α-Fe2O3纳米立方体和α-Fe2O3纳米棒自组装微球的磁学特性,其矫顽力和剩余磁化强度分别为2858.3 Oe(1 Oe=79.58 A/m)和0.195emu.g^-1(1 emu.g^-1=15.7914×10^-9 A·m^2·kg^-1),218.87 Oe和0.071 emu.g^-1.
出处 《中国科学(B辑)》 CSCD 北大核心 2008年第7期595-606,共12页 Science in China(Series B)
基金 国家自然科学基金(批准号:20573072) 教育部博士点基金(20060718010)资助项目
  • 相关文献

参考文献31

  • 1Zheng Y H, Cheng Y, Wang Y S, Bao F, Zhou L H, Wei X F. Quasicubic α-Fe2O3 nanoparticles with excellent catalytic performance. J Phys Chem B, 2006, 110(7): 3093--3097.
  • 2Sreeram K J, Indumathy R, Rajaram A, Nair B U, Ramasami T.Template synthesis of highly crystalline and monodisperse iron oxide pigments of nanosize. Mater Res Bull, 2006, 41 (10): 1875--1881.
  • 3Wu C Z, Yin P, Zhu X, OuYang C Z, Xie Y. Synthesis of hematite (Gt-Fe2O3) nanorods: Diameter-size and shape effects on their applications in magnetism, lithium ion battery, and gas sensors. J Phys Chem B, 2006, 110(36): 17806--17812.
  • 4Chen J, Xu L N, Li W Y, Gou X L. α-Fe2O3 Nanotubes in gas sensor and lithium-ion battery applications. Adv Mater, 2005, 17(5): 582--586.
  • 5Fu Y Y, Chen J, Zhang H. Synthesis of Fe2O3 nanowires by oxidation of iron. Chem Phys Lett, 2001, 350(5-6): 491--494.
  • 6Sun Z Y, Yuan H Q, Liu Z M, Han B X, Zhang X R. A highly efficient chemical sensor material for H2S: α-Fe2O3 nanotubes fabricated using carbon nanotube templates. Adv Mater, 2005, 17(24): 2993--2997.
  • 7Jia c J, Sun L D, Yan Z G, You L P, Luo F, Han X D, Pang Y C, Zhang Z, Yan C H. Single-crystalline iron oxide nanotubes. Angew Chem Int Ed, 2005, 44(28): 4328--4333.
  • 8Liu L, Kou H Z, Mo W L, Liu H J, Wang Y Q. Surfactant-assisted synthesis of α-Fe2O3 nanombes and nanorods with shape-dependent magnetic properties. J Phys Chem B, 2006, 110(31): 15218--15223.
  • 9Gong C R, Chen D R, Jiao X L, Wang Q L. Continuous hollow α-Fe2O3 and α-Fe fibers prepared by the sol - gel method. J Mater Chem, 2002, 12(6): 1844--1847.
  • 10Xiong Y J, Li Z Q, Li X X, Hu B, Xie Y. Thermally stable hematite hollow nanowires. Inorg Chem, 2004, 43(21): 6540--6542.

二级参考文献51

共引文献31

同被引文献95

  • 1朱路平,贾志杰,黄在银.a-Fe_2O_3纳米棒的制备研究[J].电子元件与材料,2004,23(10):1-3. 被引量:6
  • 2LIU L, KOU H Z, LING W, et al. Surfactant-assisted synthesis of α-Fe2O3 nanotubes and nanorods with shape-dependent magnetic properties[J]. J Phys Chem B, 2006, 110(31): 15218-15223.
  • 3DAVID S T, VICTOR E H. Kinetics of SO2 adsorption on photoexcited α-Fe2O3[J]. J Phys Chem B, 2001, 105(18): 3872-3877.
  • 4DIRK W. Characterization of synthetic hydrous hematite pigments[J]. Thermochim Acta, 2006, 445(2): 195-199.
  • 5FELDMANN C. Polyol-mediated synthesis of nanoscale functional Materials[J]. Adv Func Mater, 2003, 13(2): 101-107.
  • 6HUO L H, LI W, LU L H, et al. Preparation, structure and properties of three-dimensional ordered α-Fe2O3 nanoparticulate film[J]. Chem Mater, 2000, 12(3): 790-794.
  • 7HAN J S, BREDOW T, DAVEY D E, et al. The effect of AI addition on the gas sensing properties of Fe2O3-based sensors[J]. Sens Actuators B, 2001, 75(1/2): 18-23.
  • 8ZHANG Z Y, JIANG H J, XING Z, et al. A highly selective chemiluminescent H2S sensor[J]. Sens Actuators B, 2004, 102(1): 155-161.
  • 9CHEN J, XU L N, LI W Y. α-Fe2O3 nanotubes in gas senser and lithium-ion battery applications[J]. Adv Mater, 2005, 17(5): 582-586.
  • 10OSAMA S, WOLFGANG R, ACHIM S. Styrene synthesis: high conversion over unpromoted iron oxide catalysts under practical working conditions[J]. Angew Chem Int Edit, 2003, 42(46): 5760-5763.

引证文献6

二级引证文献8

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部